API endpoint that allows users to be viewed or edited.

GET /api/users/9fee7a77-6f81-4f0f-83e6-471e3a8be5e2/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, DELETE, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://katagotraining.org/api/users/9fee7a77-6f81-4f0f-83e6-471e3a8be5e2/?format=api",
    "username": "ATX100"
}